/* (c) darsdz.com. darsdz.com styles: blackboard green ink, chalk-yellow highlighter, paper. Tool rules shared with the pinkdz tools. */
:root {
  --desk: #f3f5f1;
  --paper: #ffffff;
  --ink: #0e4d45;
  --ink-2: #0a3a34;
  --text: #17201e;
  --muted: #56625f;
  --line: #d8dfdb;
  --mark: #f2b33d;
  --mark-soft: #fdebc4;
  --tint: #e6f0ed;
  --ok: #1e7b4f;
  --err: #b42318;
  --r: 10px;
  --kufi: "Noto Kufi Arabic", "IBM Plex Sans Arabic", system-ui, sans-serif;
  --body: "IBM Plex Sans Arabic", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--desk); color: var(--text); font: 400 17px/1.7 var(--body); }
[dir="ltr"] body { line-height: 1.6; }
a { color: var(--ink); }
:focus-visible { outline: 3px solid var(--mark); outline-offset: 2px; border-radius: 4px; }
.wrap { width: min(100% - 32px, 860px); margin-inline: auto; }
[hidden] { display: none !important; }

/* top */
.top { background: var(--paper); border-bottom: 1px solid var(--line); }
.top__in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { font: 800 22px/1 var(--kufi); color: var(--ink); text-decoration: none; display: inline-flex; align-items: baseline; gap: 8px; }
.brand__mark { display: inline-block; width: 26px; height: 7px; background: var(--mark); border-radius: 4px; color: transparent; overflow: hidden; }
.langs { display: flex; gap: 4px; flex-wrap: wrap; }
.langs a { padding: 4px 10px; border-radius: 6px; text-decoration: none; color: var(--muted); font-size: 14px; }
.langs a[aria-current] { color: var(--ink); background: var(--desk); font-weight: 600; }

/* hero */
.hero { padding: 44px 0 20px; }
.hero h1 { font: 800 clamp(28px, 5.2vw, 44px)/1.35 var(--kufi); color: var(--ink); margin: 0 0 12px; letter-spacing: 0; }
[dir="ltr"] .hero h1 { line-height: 1.2; }
.lead { margin: 0; color: var(--muted); font-size: 18px; max-width: 62ch; }

/* the sheet: the tool sits on a page of paper with a highlighter swipe across its top edge */
.tool { margin: 14px 0 40px; }
.sheet { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 26px; box-shadow: 0 1px 0 var(--line), 0 18px 40px -28px rgba(14, 77, 69, .45); }
.sheet::before { content: ""; position: absolute; inset-inline-start: 26px; top: -7px; width: 120px; height: 14px; background: var(--mark); border-radius: 7px; transform: rotate(-1.5deg); }
.drop { display: grid; justify-items: center; gap: 8px; text-align: center; padding: 42px 18px; border: 2px dashed #b5c4bf; border-radius: 8px; cursor: pointer; transition: background .15s, border-color .15s; }
.drop:hover, .drop.is-over { background: #f4f8f6; border-color: var(--ink); }
.drop__title { font: 600 21px/1.5 var(--body); color: var(--ink); }
.drop__hint { color: var(--muted); font-size: 15px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 8px 20px; border: 0; border-radius: 8px; background: var(--ink); color: #fff; font: 600 16px/1.2 var(--body); cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--ink-2); }
.btn--quiet { background: var(--desk); color: var(--ink); }
.btn--quiet:hover { background: #dde7e3; }
.drop .btn { margin-top: 10px; }
.quota { margin: 14px 0 0; color: var(--muted); font-size: 14px; }

/* progress */
.run__head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: baseline; }
.run__file { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.run__status { margin: 0; color: var(--muted); font-size: 15px; }
.pages { list-style: none; margin: 14px 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.pages li { min-width: 34px; height: 30px; padding: 0 8px; display: grid; place-items: center; border-radius: 6px; background: var(--desk); color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.pages li.is-busy { background: var(--mark-soft); color: var(--text); }
.pages li.is-done { background: #dcefe5; color: var(--ok); }
.pages li.is-fail { background: #fbe1de; color: var(--err); }

/* result */
.out__bar { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 12px; }
.out__text { min-height: 180px; max-height: 60vh; overflow: auto; padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: #fcfdfc; white-space: pre-wrap; font-size: 17px; line-height: 1.9; unicode-bidi: plaintext; }
.out__text:focus { outline: 2px solid var(--ink); outline-offset: 1px; }
.out__text .pg { display: block; margin: 18px 0 8px; padding-top: 10px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; user-select: none; }
.out__text .pg:first-child { margin-top: 0; padding-top: 0; border: 0; }
.out__text .pt:empty::before { content: attr(data-empty); color: var(--muted); font-style: italic; }
.out__note { color: var(--muted); font-size: 14px; margin: 10px 0 0; }
.msg { margin: 12px 0 0; padding: 10px 14px; border-radius: 8px; font-size: 15px; }
.msg--err { background: #fbe1de; color: var(--err); }
.msg--ok { background: #dcefe5; color: var(--ok); }

/* other tools */
.list { margin: 0 0 56px; }
.list h2, .prose h2 { font: 800 22px/1.5 var(--kufi); color: var(--ink); margin: 0 0 14px; }
.list ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.list li { border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.list li a, .list li div { display: grid; gap: 2px; padding: 14px 0; text-decoration: none; color: var(--text); flex: 1; }
.list li a strong { color: var(--ink); }
.list li span { color: var(--muted); font-size: 15px; }
.list li em { font-style: normal; font-size: 13px; color: var(--muted); background: var(--paper); border: 1px solid var(--line); padding: 2px 10px; border-radius: 20px; white-space: nowrap; }
.list li.is-soon strong { color: var(--muted); }

/* text pages */
.prose { padding-bottom: 56px; }
.prose h1 { font: 800 32px/1.4 var(--kufi); color: var(--ink); margin: 40px 0 16px; }
.prose section { margin: 0 0 36px; }
.prose p, .prose li { max-width: 68ch; }
.steps { padding-inline-start: 22px; }
.steps li { margin: 0 0 8px; }
details { border-bottom: 1px solid var(--line); padding: 12px 0; }
summary { cursor: pointer; font-weight: 600; color: var(--ink); }
details p { margin: 8px 0 0; color: var(--text); }
.muted { color: var(--muted); font-size: 14px; }

/* foot */
.foot { border-top: 1px solid var(--line); background: var(--paper); }
.foot__in { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 18px 0; font-size: 14px; color: var(--muted); }
.foot nav { display: flex; gap: 16px; flex-wrap: wrap; }
.foot a { color: var(--muted); }
.foot p { margin: 0; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .hero { padding-top: 28px; }
  .sheet { padding: 18px; }
  .sheet::before { inset-inline-start: 18px; width: 90px; }
  .drop { padding: 30px 12px; }
  .out__bar .btn { flex: 1 1 calc(50% - 8px); }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* ================= 2026-10-18 multi-tool additions ================= */
.wrap--wide { width: min(100% - 32px, 1180px); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.top__in { gap: 12px 18px; }
.crumb { color: var(--ink); text-decoration: none; font-weight: 600; padding: 4px 10px; border-inline-start: 2px solid var(--line); margin-inline-end: auto; }
.notice { margin: 14px 0 0; padding: 10px 14px; border-radius: 8px; background: var(--mark-soft); color: #5a3d00; font-size: 15px; max-width: 62ch; }
.btn--sm { min-height: 36px; padding: 6px 14px; font-size: 14px; }
.btn[disabled] { opacity: .55; cursor: progress; }
.linkbtn { background: none; border: 0; color: var(--err); cursor: pointer; font: inherit; font-size: 14px; padding: 4px 0; text-decoration: underline; }
.msg-slot:empty { display: none; }

/* hub */
.hero--hub { padding-bottom: 28px; }
.hero--hub h1 { font-size: clamp(32px, 6.4vw, 56px); }
.tools { list-style: none; margin: 0 0 64px; padding: 0; display: grid; gap: 0; border-top: 2px solid var(--ink); }
.tools li { border-bottom: 1px solid var(--line); }
.tools a { display: grid; grid-template-columns: 56px 1fr auto; align-items: center; gap: 16px; padding: 20px 4px; text-decoration: none; color: var(--text); }
.tools a:hover .tools__icon { background: var(--mark); color: var(--ink); }
.tools__icon { width: 56px; height: 56px; display: grid; place-items: center; border-radius: 12px; background: var(--paper); color: var(--ink); border: 1px solid var(--line); transition: background .15s; }
.tools__txt { display: grid; gap: 2px; }
.tools__txt strong { font: 800 20px/1.4 var(--kufi); color: var(--ink); }
.tools__txt span { color: var(--muted); font-size: 15px; }
.tools__tag { font-size: 12px; color: var(--muted); border: 1px solid var(--line); background: var(--paper); border-radius: 20px; padding: 3px 10px; white-space: nowrap; }
@media (max-width: 560px) { .tools a { grid-template-columns: 44px 1fr; } .tools__icon { width: 44px; height: 44px; } .tools__tag { grid-column: 2; justify-self: start; } }

/* forms */
.f { display: grid; gap: 4px; margin: 0 0 12px; }
.f > span { font-size: 14px; font-weight: 600; color: var(--muted); }
.f input:not([type=range]):not([type=color]), .f select, .f textarea {
  width: 100%; font: 400 16px/1.5 var(--body); color: var(--text); background: #fff; border: 1px solid #c2cdc9; border-radius: 8px; padding: 9px 12px; }
.f textarea { resize: vertical; }
.f input:focus, .f select:focus, .f textarea:focus { outline: 2px solid var(--ink); outline-offset: 0; border-color: var(--ink); }
.f2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.f3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 12px; }
@media (max-width: 640px) { .f2, .f3 { grid-template-columns: 1fr; } }
fieldset { border: 0; border-top: 1px solid var(--line); margin: 6px 0 0; padding: 14px 0 4px; }
legend { font: 800 16px/1.5 var(--kufi); color: var(--ink); padding: 0 8px 0 0; }
[dir="rtl"] legend { padding: 0 0 0 8px; }
.opt { display: flex; align-items: center; gap: 8px; margin: 0 0 8px; cursor: pointer; }
.opt input[type=color] { width: 36px; height: 28px; border: 1px solid var(--line); border-radius: 6px; padding: 0; background: none; }

/* progress bar */
.bar { height: 8px; background: var(--desk); border-radius: 4px; overflow: hidden; margin: 12px 0 4px; }
.bar i { display: block; height: 100%; width: 0; background: var(--ink); border-radius: 4px; transition: width .4s; }

/* cv */
.seg { display: inline-flex; gap: 4px; padding: 4px; background: var(--paper); border: 1px solid var(--line); border-radius: 10px; margin: 0 0 16px; flex-wrap: wrap; }
.seg button { border: 0; background: none; padding: 8px 16px; border-radius: 7px; font: 600 15px/1.3 var(--body); color: var(--muted); cursor: pointer; }
.seg button[aria-selected="true"] { background: var(--ink); color: #fff; }
.cv__grid { display: grid; grid-template-columns: minmax(0, 440px) minmax(0, 1fr); gap: 24px; align-items: start; margin-bottom: 40px; }
@media (max-width: 960px) { .cv__grid { grid-template-columns: 1fr; } }
.cv__form.sheet::before { display: none; }
.row { border: 1px dashed #c2cdc9; border-radius: 8px; padding: 12px 12px 4px; margin: 0 0 10px; }
.cv__actions { display: grid; gap: 4px; margin-top: 12px; }
.cv__preview { position: sticky; top: 12px; }
.paper { background: #fff; box-shadow: 0 1px 3px rgba(14, 77, 69, .12), 0 24px 48px -32px rgba(14, 77, 69, .5); min-height: 640px; padding: 7% 8%;
  font: 400 13px/1.55 "IBM Plex Sans Arabic", Arial, sans-serif; color: #1a1d2b; }
.paper .d-h1 { font: 800 26px/1.3 var(--kufi); color: var(--ink); margin: 0; }
.paper .d-sub { font-size: 15px; color: #444; margin: 2px 0 0; }
.paper .d-meta { font-size: 12px; color: #555; margin: 4px 0 10px; }
.paper .d-h2 { font: 800 14px/1.4 var(--kufi); color: var(--ink); border-bottom: 1.5px solid var(--ink); padding-bottom: 3px; margin: 16px 0 8px; }
.paper .d-item { font-weight: 600; margin: 8px 0 2px; }
.paper .d-p { margin: 0 0 8px; }
.paper .d-gap { height: 14px; }
.paper ul { margin: 0 0 4px; padding-inline-start: 18px; }
.paper li { margin: 0 0 2px; }
.paper--letter .d-item:first-child, .paper--request .d-item:first-child { font: 800 16px/1.4 var(--kufi); color: var(--ink); }
@media print {
  body { background: #fff; }
  .top, .foot, .hero, .prose, .seg, .cv__form, .out__bar, .notice { display: none !important; }
  .wrap, .wrap--wide { width: 100%; margin: 0; }
  .cv__grid { display: block; margin: 0; }
  .paper { box-shadow: none; min-height: 0; padding: 0; font-size: 11pt; }
  @page { size: A4; margin: 16mm; }
}

/* study */
.study__row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.study__row [data-ask] { margin-inline-start: auto; }
.study__thumb { display: inline-flex; align-items: center; gap: 8px; }
.study__thumb img { width: 52px; height: 52px; object-fit: cover; border-radius: 6px; border: 1px solid var(--line); }
.answer { margin-top: 20px; border-top: 2px solid var(--ink); padding-top: 16px; }
.answer__body { font-size: 17px; line-height: 1.9; }
.answer__body h3 { font: 800 18px/1.5 var(--kufi); color: var(--ink); margin: 18px 0 6px; }
.answer__body p { margin: 0 0 10px; }
.answer__body .katex-display { overflow-x: auto; overflow-y: hidden; padding: 4px 0; direction: ltr; }
.answer__body .katex { direction: ltr; unicode-bidi: isolate; }

/* subtitles */
.ai-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; margin: 6px 0 12px; padding: 12px; background: var(--desk); border-radius: 8px; }
.ai-row .f { margin: 0; min-width: 220px; }
.segs { list-style: none; margin: 0; padding: 0; max-height: 60vh; overflow: auto; border: 1px solid var(--line); border-radius: 8px; }
.segs li { display: grid; grid-template-columns: 110px 1fr; gap: 10px; padding: 8px 12px; border-bottom: 1px solid #eef0f5; }
.segs__t { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; padding-top: 3px; }
.segs__x { outline: none; border-radius: 4px; padding: 2px 4px; unicode-bidi: plaintext; }
.segs__x:focus { background: #fffaf0; box-shadow: 0 0 0 2px var(--mark); }
@media (max-width: 560px) { .segs li { grid-template-columns: 1fr; gap: 2px; } }

/* photo */
.ph { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; align-items: start; }
@media (max-width: 860px) { .ph { grid-template-columns: 1fr; } }
.ph__stage { background: var(--desk); border-radius: 8px; padding: 12px; display: grid; place-items: center; }
.ph__stage canvas { max-width: 100%; max-height: 70vh; height: auto; box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.ph__stage canvas.is-clear { background-color: #fff; background-image: linear-gradient(45deg, #e3e6ee 25%, transparent 25%), linear-gradient(-45deg, #e3e6ee 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e3e6ee 75%), linear-gradient(-45deg, transparent 75%, #e3e6ee 75%);
  background-size: 20px 20px; background-position: 0 0, 0 10px, 10px -10px, -10px 0; }
.ph__opts fieldset:first-child { border-top: 0; padding-top: 0; }
.ph__opts input[type=range] { width: 100%; accent-color: var(--ink); }

/* ================= darsdz frame (2026-10-18) ================= */
.skip { position: absolute; inset-inline-start: -999px; top: 0; background: var(--mark); color: var(--ink); padding: 8px 14px; z-index: 10; }
.skip:focus { inset-inline-start: 8px; }
.top { background: var(--ink); border: 0; color: #fff; }
.top .top__in { min-height: 64px; flex-wrap: nowrap; }
.brand { color: #fff; font: 800 26px/1 var(--kufi); gap: 2px; align-items: center; }
.brand__ar { color: #fff; }
.brand__dz { font: 800 17px/1 system-ui, sans-serif; background: var(--mark); color: var(--ink); padding: 4px 6px 5px; border-radius: 6px; margin-inline-start: 6px; letter-spacing: .5px; }
.brand--foot .brand__ar { color: var(--ink); }
/* approved logo (2026-10-18, p10): mark + wordmark; dz chip in Noto Kufi Arabic 800 as on the logo sheet */
.brand__logo { width: 36px; height: 36px; flex: none; margin-inline-end: 9px; display: block; }
.brand__dz { font-family: var(--kufi); padding: 3px 7px 6px; }
@media (max-width: 520px) { .brand__logo { width: 30px; height: 30px; margin-inline-end: 7px; } .brand { font-size: 23px; } }
.top__search { flex: 1; max-width: 460px; }
.top__search input { width: 100%; border: 0; border-radius: 22px; padding: 10px 18px; font: 400 15px/1.3 var(--body); background: rgba(255,255,255,.12); color: #fff; }
.top__search input::placeholder { color: rgba(255,255,255,.7); }
.top__search input:focus { background: #fff; color: var(--text); outline: 3px solid var(--mark); }
.menu { background: var(--ink-2); }
.menu__in { display: flex; gap: 2px; align-items: center; overflow-x: auto; scrollbar-width: none; }
.menu__in::-webkit-scrollbar { display: none; }
.menu__in > a, .menu__drop > summary { display: block; padding: 11px 14px; color: #e3eeea; text-decoration: none; font-size: 15px; font-weight: 600; white-space: nowrap; list-style: none; cursor: pointer; border-radius: 0; }
.menu__drop > summary::-webkit-details-marker { display: none; }
.menu__drop > summary::after { content: "▾"; font-size: 11px; margin-inline-start: 6px; opacity: .7; }
.menu__in > a:hover, .menu__drop > summary:hover, .menu__drop[open] > summary { background: rgba(255,255,255,.08); color: #fff; }
.menu__app { color: var(--mark) !important; }
.menu__drop { position: static; }
.menu__panel { position: absolute; z-index: 20; margin-top: 0; background: var(--paper); color: var(--text); border-radius: 0 0 10px 10px; box-shadow: 0 18px 40px -16px rgba(0,0,0,.35); padding: 8px; display: grid; min-width: 240px; }
.menu__panel a { padding: 9px 12px; border-radius: 6px; text-decoration: none; color: var(--text); }
.menu__panel a:hover { background: var(--tint); color: var(--ink); }
.menu__panel .menu__all { font-weight: 700; color: var(--ink); border-bottom: 1px solid var(--line); border-radius: 6px 6px 0 0; margin-bottom: 4px; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 4px; padding: 14px 0 0; margin: 0; font-size: 14px; color: var(--muted); }
.crumbs li + li::before { content: "‹"; margin-inline-end: 4px; color: #9aa7a3; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; }

/* home */
.home-hero { background: var(--ink); color: #fff; padding: 46px 0 52px; position: relative; overflow: hidden; }
.home-hero::after { content: ""; position: absolute; inset-inline-end: -60px; bottom: -70px; width: 260px; height: 260px; border-radius: 50%; border: 26px solid rgba(242,179,61,.18); }
.home-hero__in { position: relative; z-index: 1; }
.home-hero h1 { font: 800 clamp(30px, 5.6vw, 52px)/1.3 var(--kufi); margin: 10px 0 12px; max-width: 18ch; }
.home-hero .lead { color: #cfe1dc; max-width: 56ch; }
.chip { display: inline-block; margin: 0; padding: 4px 12px; border-radius: 20px; background: var(--mark); color: var(--ink); font-weight: 700; font-size: 14px; }
.search-big { display: flex; gap: 8px; margin: 22px 0 0; max-width: 620px; }
.search-big input { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; font: 400 17px/1.3 var(--body); }
.home-hero .search-big input { border: 0; }
.btn--mark { background: var(--mark); color: var(--ink); }
.btn--mark:hover { background: #e9a21f; }
.home-hero .btn { background: var(--mark); color: var(--ink); }
.sec-h { font: 800 22px/1.5 var(--kufi); color: var(--ink); margin: 40px 0 14px; }
.page-h { padding: 26px 0 8px; }
.page-h h1 { font: 800 clamp(26px, 4.6vw, 38px)/1.4 var(--kufi); color: var(--ink); margin: 0 0 8px; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin: 10px 0 24px; }
.cards--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { display: grid; gap: 4px; align-content: start; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 18px; text-decoration: none; color: var(--text); transition: border-color .15s, transform .15s; position: relative; }
.card:hover { border-color: var(--ink); transform: translateY(-2px); }
.card strong { font: 800 18px/1.5 var(--kufi); color: var(--ink); }
.card span { color: var(--muted); font-size: 15px; }
.card em { font-style: normal; font-size: 13px; color: var(--ink); background: var(--tint); border-radius: 20px; padding: 2px 10px; justify-self: start; margin-top: 4px; }
.card--exam { border-top: 5px solid var(--mark); }
.card__tag { font-size: 13px !important; font-weight: 700; color: #8a5a00 !important; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill { display: inline-block; padding: 7px 14px; border-radius: 20px; background: var(--paper); border: 1px solid var(--line); color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 600; }
.pill:hover { border-color: var(--ink); }
.pill--strong { background: var(--ink); color: #fff; border-color: var(--ink); }
.pill--on { background: var(--mark); border-color: var(--mark); color: var(--ink); }
.pills--streams { margin: 0 0 16px; }
.tools-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 20px; }
.stages { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stage { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.stage h3 { font: 800 19px/1.5 var(--kufi); margin: 0 0 8px; }
.stage h3 a { color: var(--ink); text-decoration: none; }
.grades { list-style: none; margin: 0; padding: 0; }
.grades li { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--line); }
.grades a { display: block; padding: 9px 0; text-decoration: none; color: var(--text); flex: 1; }
.grades a:hover { color: var(--ink); }
.grades em { font-style: normal; font-size: 12px; background: var(--tint); color: var(--ink); border-radius: 20px; padding: 1px 8px; }
.promo { display: flex; gap: 18px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin: 34px 0; padding: 24px; border-radius: 14px; background: var(--mark-soft); border: 1px solid #f0d28f; }
.promo h2 { font: 800 22px/1.5 var(--kufi); color: var(--ink); margin: 0 0 4px; }
.promo p { margin: 0; max-width: 56ch; }

/* grade / subject / term */
.subjects { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; margin-bottom: 40px; }
.subj { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.subj h2 { font: 800 18px/1.5 var(--kufi); margin: 0 0 10px; }
.subj h2 a { color: var(--ink); text-decoration: none; }
.subj__terms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.subj__terms a { text-align: center; padding: 8px 4px; border-radius: 8px; background: var(--desk); color: var(--text); text-decoration: none; font-size: 14px; }
.subj__terms a.is-now { background: var(--tint); color: var(--ink); font-weight: 700; }
.subj__terms a.is-empty { color: var(--muted); }
.subj__terms em { font-style: normal; font-size: 12px; background: var(--mark); color: var(--ink); border-radius: 10px; padding: 0 6px; }
.term-tabs { display: flex; gap: 6px; margin: 4px 0 16px; flex-wrap: wrap; }
.term-tabs a { padding: 8px 16px; border-radius: 8px; background: var(--paper); border: 1px solid var(--line); text-decoration: none; color: var(--text); }
.term-tabs a[aria-current] { background: var(--ink); color: #fff; border-color: var(--ink); }
.term-block { margin: 0 0 22px; }
.term-block h2 { font: 800 19px/1.5 var(--kufi); margin: 0 0 8px; }
.term-block h2 a { color: var(--ink); }
.doclist { list-style: none; margin: 0 0 24px; padding: 0; border-top: 1px solid var(--line); }
.doclist li { border-bottom: 1px solid var(--line); }
.doclist a { display: grid; gap: 2px; padding: 13px 4px; text-decoration: none; color: var(--text); }
.doclist a:hover strong { text-decoration: underline; }
.doclist strong { color: var(--ink); font-weight: 600; }
.doclist span { color: var(--muted); font-size: 14px; }
.related { margin: 30px 0 40px; }
.related h2 { font: 800 18px/1.5 var(--kufi); color: var(--ink); margin: 0 0 10px; }

/* document */
.doc { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 28px; margin: 16px 0 24px; }
.doc__head { border-bottom: 2px solid var(--ink); padding-bottom: 14px; margin-bottom: 8px; }
.doc__meta { margin: 0; color: var(--muted); font-size: 14px; }
.doc h1 { font: 800 clamp(22px, 4vw, 30px)/1.5 var(--kufi); color: var(--ink); margin: 4px 0 8px; }
.doc__facts { display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--muted); font-size: 15px; margin: 0 0 10px; }
.doc__bar { display: flex; gap: 8px; flex-wrap: wrap; }
.ex { padding: 18px 0; border-bottom: 1px dashed var(--line); }
.ex h2 { font: 800 19px/1.5 var(--kufi); color: var(--ink); margin: 0 0 8px; }
.ex h2 small { font: 600 14px/1 var(--body); color: var(--muted); }
.ex__body, .sol__body { font-size: 17px; line-height: 1.95; }
.ex__body p, .sol__body p { margin: 0 0 10px; }
.ex__body h4, .sol__body h4 { font: 700 16px/1.6 var(--kufi); margin: 14px 0 6px; color: var(--ink); }
.ex__body ol, .ex__body ul, .sol__body ol, .sol__body ul { padding-inline-start: 24px; margin: 0 0 10px; }
.ex .katex-display { overflow-x: auto; overflow-y: hidden; padding: 4px 0; direction: ltr; }
.ex .katex { direction: ltr; unicode-bidi: isolate; }
.tbl { overflow-x: auto; margin: 0 0 12px; }
.tbl table { border-collapse: collapse; min-width: 50%; }
.tbl th, .tbl td { border: 1px solid var(--line); padding: 6px 10px; text-align: center; }
.tbl th { background: var(--desk); }
details.sol { margin: 12px 0 4px; border: 1px solid #f0d28f; background: #fffaf0; border-radius: 10px; padding: 0; }
details.sol > summary { padding: 10px 14px; color: #6b4600; }
details.sol[open] > summary { border-bottom: 1px solid #f0d28f; }
.sol__body { padding: 12px 16px 4px; }
.ex__ask { margin: 10px 0 0; font-size: 15px; }
.ex__ask a { color: var(--ink); font-weight: 600; }
.doc__foot { padding-top: 16px; }
.report { border: 0; padding: 6px 0; }
.report summary { font-weight: 600; font-size: 15px; color: var(--muted); }
.report form { margin-top: 10px; }

/* calculators */
.calc { padding: 22px; margin: 6px 0 20px; }
.calc-t { width: 100%; border-collapse: collapse; }
.calc-t th, .calc-t td { border: 0; border-bottom: 1px solid var(--line); padding: 6px 6px; text-align: start; background: none; }
.calc-t thead th { font-size: 13px; color: var(--muted); font-weight: 600; }
.calc-t tbody th { font-weight: 600; font-size: 15px; }
.calc-t tfoot th, .calc-t tfoot td { font-weight: 700; color: var(--ink); border-bottom: 0; }
.num { width: 76px; padding: 8px 8px; border: 1px solid #c2cdc9; border-radius: 8px; font: 600 16px/1.2 var(--body); text-align: center; direction: ltr; }
.num--coef { width: 54px; background: var(--desk); }
.num[readonly] { background: var(--tint); color: var(--ink); }
.num:focus { outline: 2px solid var(--ink); border-color: var(--ink); }
.calc-t tr.is-off th, .calc-t tr.is-off td { opacity: .5; }
.calc-t tr.is-off .opt { opacity: 1; }
.calc-t tr.is-bad .num { border-color: var(--err); background: #fdeceb; }
.calc .h-only { display: none; }
.calc.helper-on .h-only { display: table-cell; }
.calc.helper-on .num { width: 62px; }
.opt--line { margin: 12px 0 0; font-size: 15px; }
.f--inline { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin: 14px 0 0; }
.calc__bar { margin: 14px 0 0; }
.result { margin-top: 16px; padding: 16px 18px; border-radius: 12px; background: var(--tint); }
.result p { margin: 4px 0; }
.result__avg { display: flex; align-items: baseline; gap: 10px; }
.result__avg span { color: var(--muted); }
.result__avg strong { font: 800 40px/1.1 var(--kufi); color: var(--ink); direction: ltr; }
.result__ok { color: var(--ok); font-weight: 700; }
.result__no { color: var(--err); font-weight: 700; }
.result__warn { color: var(--err); }
.result__hint { color: var(--muted); }
.note { margin: 16px 0; padding: 12px 16px; border-radius: 10px; background: var(--mark-soft); border: 1px solid #f0d28f; font-size: 15px; }
.faq { margin: 24px 0 40px; }
.faq h2 { font: 800 20px/1.5 var(--kufi); color: var(--ink); }
.card.report-form, .report-form { margin: 12px 0 40px; }
.report-form:hover { transform: none; }

/* footer */
.foot { background: var(--paper); border-top: 4px solid var(--ink); margin-top: 30px; }
.foot__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 22px; padding: 30px 0 14px; }
.foot__grid nav { display: grid; gap: 6px; align-content: start; }
.foot__grid nav strong { color: var(--ink); font-size: 15px; }
.foot__grid a { color: var(--muted); text-decoration: none; font-size: 14px; }
.foot__grid a:hover { color: var(--ink); text-decoration: underline; }
.foot__end { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; border-top: 1px solid var(--line); padding: 12px 0 20px; font-size: 14px; color: var(--muted); }
.foot__end p { margin: 0; }
@media (max-width: 760px) { .foot__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) {
  .top .top__in { flex-wrap: wrap; padding: 10px 0; }
  .top__search { order: 3; flex-basis: 100%; max-width: none; }
  .doc { padding: 18px; }
  .calc { padding: 14px; }
  .num { width: 58px; }
  .calc.helper-on .num { width: 48px; padding: 6px 2px; font-size: 14px; }
  .foot__grid { grid-template-columns: 1fr; }
  .search-big .btn { padding: 8px 14px; }
}
@media print {
  .menu, .crumbs, .related, .ex__ask, .doc__bar, .doc__foot, .skip { display: none !important; }
  .doc { border: 0; padding: 0; margin: 0; }
  details.sol { break-inside: avoid; }
}
.terms { margin: 0; display: grid; gap: 2px 0; }
.terms dt { font-weight: 700; color: var(--ink); margin-top: 8px; }
.terms dd { margin: 0; color: var(--muted); font-size: 15px; }
.menu__drop { border: 0; padding: 0; }
.home-hero h1 { max-width: 24ch; }
@media (max-width: 560px) {
  .calc-t th, .calc-t td { padding: 5px 2px; }
  .calc-t tbody th { font-size: 14px; }
  .calc.helper-on .num { width: 42px; padding: 6px 1px; font-size: 14px; }
  .calc.helper-on .num--coef { width: 34px; }
}
.ex[dir="ltr"] .ex__body, .ex[dir="ltr"] .sol__body { text-align: left; }
.ex[dir="ltr"] .sol__body { direction: ltr; }